Shaw Mountain Formation - basal volcaniclastic and metasedimentary member

Heterogeneous, thin (<10 m thick) unit of interbedded quartzite, amphibolite, felsic granofels, and phyllite, occurring at the base of the Waits River Formation on the north end of the Chester dome. Interpreted as recycled volcaniclastic rocks derived from the underlying volcanic and intrusive rocks in the Cram Hill Formation. Part of the Connecticut Valley Trough.
State Vermont
Name Shaw Mountain Formation - basal volcaniclastic and metasedimentary member
Geologic age Upper to Lower Silurian
Lithologic constituents
Major
Metamorphic > Amphibolite
Metamorphic > Granoblastic > Granofels
Metamorphic > Metasedimentary > Metaclastic > Quartzite
Minor
Metamorphic > Metasedimentary > Metaclastic > Phyllite
References
NGMDB product
Counties Windsor